The economy as a whole may not be ready to turn the corner just yet, but new data from the Digital Entertainment Group (DEG) will have proponents and manufacturers of Blu-ray devices dancing a jig. According to the group, Blu-ray disc sales are up a whopping 91 percent compared to the first half of 2008. Total for the year is said to be around $407 million; a figure the DEG reckons helped cushion the bottom line against an overall downward trend in consumer spending. This type of growth rate could be a sign